Wind mill with a suspension for cables and the like, such suspension for cables and the like and a holder for such suspension

ABSTRACT

A wind turbine has a suspension and holders for such suspensions. Elongated members such as electrical power cables can be suspended from the nacelle of a wind turbine and down through the tower of the wind turbine. The suspension utilizes either a high friction between an inner rod and outer plates to hold the member by ensuring that the length of the inner rod and the supporting plates is at least four times the diameter of the members or a more mechanical holding of the members by providing beads in clamping portions constituting the suspension.

[0001] This application is a Divisional of co-pending application Ser.No. 09/880,904, filed on Jun. 15, 2001, which is a Continuation ofco-pending International PCT Application No. PCT/DK99/00708, filed onDec. 17, 1999, which designated the United States, the entire contentsof which are hereby incorporated by reference and for which priority isclaimed under 35 U.S.C. § 120; and this application claims priority ofApplication No. PA 1998 01661 filed in Denmark on Dec. 17, 1998 under 35U.S.C. § 119.

FIELD OF THE INVENTION

[0002] The present invention relates to a wind turbine with a suspensionand such a suspension for attaching elongated members such as cables,cords, wires or the like, said suspension comprising a first clampingportion and a second clamping portion, said clamping portions beingintended for clamping around the member, and where the first clampingportion and the second clamping portion may be displaced inwards againsttowards each other and by means of securing means may be secured aroundthe item. The invention also relates to a holder for such suspension.

BACKGROUND OF THE INVENTION

[0003] U.S. Pat. No. 5,195,704 describes a clamp for securing a cord orthe like. The clamp comprises a body and a cover, each provided withsurfaces for supporting the cord. Each part comprises a clamping portionand a through-going bead, extending within the surface of the clampingjaw. The cover is displaceable in relation to the body so that theclamping jaws are more or less tightly engaged. Thus, it is possible tosecure cords with different diameters. The cover is displaced inrelation to the body and is secured in relation to the body by means ofa bolt.

[0004] However, this clamp has certain drawbacks. Because of the shapeof the clamping jaws, where the inner surfaces of the clamping jaws havea partly circular cross-section with a given radius, it is not possibleto secure cords with a smaller diameter as well as cords with a largediameter, and specifically not as well as cords with a diametercorresponding to the radius of the inner surfaces of the clamping jaws.Furthermore, the way that the body and the cover are mutually connectedhas the drawback that there is a risk of tearing off any insulation ofthe cords because of the pincers-movement made by the cover in relationto the body, when the two clamping jaws are being displaced towards eachother.

[0005] U.S. Pat. No. 4,684,196 describes a clamp connector for holdingof electrical wires and for connecting of these. The connector comprisesa first and a second half portion which are mutually joined and whichare provided with at least two corresponding grooves for taking up ofthe electrical wires. Each of the two half portions is provided withtransverse bridging plates that are provided with sets of piercingteeth. The purpose of the connector is to provide a means that iscapable of better securing the electrical wires, also even if the endsof the electrical wires are exposed to a permanent deformation when theends are pushed together in the holder. Furthermore, it is a purposethat the connector itself is not exposed to deformation when the twohalf portions of the connector are mutually connected and tightenedtowards each other.

[0006] This connector has actually the complete opposite purpose thanthe present invention and accordingly this connector is provided withmeans that are very different to the means of the holder of the presentinvention. The purpose of the above-mentioned connector is to penetratethe insulation of the wires and the wires themselves in order to obtainthe conducting contact between the ends of the wires and the transversebridging plates. Thus, a severe and permanent deformation of not onlythe insulation but also of the wiring itself is established with theconnector of the above-mentioned US-publication.

[0007] DE 2 650 145 describes a clamp for hanging up of electricalcables extending horizontally between masts. The clamp comprises aninner shelf clamping around the cable and an outer shelf surrounding theinner shelf. The inner shelf consists of two halves tightened togetheraround the cable. Each of the two halves is provided with jaws togetherforming a substantially semi-circular cross-section, so that when thetwo halves of the inner shelf are squeezed together then a substantiallycircular cross-section is formed through which cross-section theelectrical cable stretches. The purpose of the holder is however toprovide a holder minimising the risk of water penetrating into theholder and which, if water nevertheless did pass into the holder,assures that the water is led out of the holder again.

[0008] This holder has more similarities with the present invention.However, still a substantial drawback is envisaged. Each of the twohalves of the inner shelf has opposite end surfaces being pushed towardseach other when the two halves of the inner shelf are being tightenedtogether. There is a great risk of the insulation of the electricalwires being squeezed between these opposing surfaces. It is important tobear in mind, that the diameter of the electrical wire may varydepending on the manufacturer of the cables and depending on the type ofcable and due to different dimensions depending on temperature andhumidity. Especially in the case where the two halves are completelyjoined and where the opposing surfaces are abutting each other when thehalves are joined, then there is an even greater risk of the insulationbeing squeezed and damaged.

[0009] U.S. Pat. No. 5,794,897 describes a hanger for supportingtransmission lines such as coaxial cables and the like used in antennasystems. The hanger comprises a clamping structure with two grippingelements. The gripping elements of the clamping structure grip thecoaxial cables by means of notches provided on gripping surfaces of thegripping elements. This is accomplished by securing means such as boltand nut, which tighten the two gripping elements together. The grippingelements are also provided with snapping elements for connecting saidgripping elements so that the clamping structure may be used forinitially loosely clamping the cables and subsequently firmly clampingthe cables when the securing means are tightened.

[0010] The document describes the possibility of gripping cables byhaving beads on gripping surfaces of gripping elements. However, theclamping structure still has the great disadvantage that the outerinsulation of the cables may be damaged when the gripping elements aretightened. Because of the expressed need for firstly loosely securingand subsequently firmly securing the cables to the clamping structure,snapping means are provided. These may however squeeze the insulationwhen the gripping elements are firmly tightened around the cables.Furthermore, there is no mentioning of the special problems occurringwithin wind turbine towers where the cables may be twisted.

[0011] U.S. Pat. No. 4,545,728 describes a wind turbine with yaw springreturn means for returning the nacelle of the wind turbine from aposition to which it has been turned to the initial position in order toprevent excessive twisting of the power cables and control cables. Thepower cables and control cables extend loosely and linearly downwardsfrom the nacelle through a passage constituted by an annular bearing tothe tower. When the nacelle rotates in relation to the tower, the cableswill twist as well. When the nacelle by means of the yaw spring returnsto its initial position the cables will unwind.

[0012] This document does however not disclose special means forsuspending the cables extending from the nacelle downward through thepassage to the tower. Thus, with no special suspension means and with atwisting of the cables, then there is a great risk of the cablesdisconnecting from whichever attachment means they may be connected to.Also, cables extending form the nacelle and downwards through hightowers will experience that the weight of the cables together with onlya slight twisting of the cables may cause the cables to disconnect inresponse to a combination of the load from the weight of the cables justadded a small force from the slight twisting of the cables.

BRIEF DESCRIPTION OF THE INVENTION

[0013] It is the object of the present invention to provide a suspensioncapable of securing cords, cables, wires, hoses and the like withvarying diameters with the same degree of securing, but also securingthese items in a better way and especially a suspension for suspendingthe items vertically. Moreover, it is the object of the invention toprovide a suspension without the risk of damaging the items or theinsulation of the items.

[0014] The object is achieved by a wind turbine having a firstsuspension characterised in that the wind turbine further comprising atleast a first suspension being suspended by the nacelle, the first cablesuspension defining substantially vertically extending supportingsurfaces, the outer surface of each of said elongated members such aselectrical power cables for a longitudinal length of at least four timesthe mean outer diameter of the member being in abutting contact with andsqueezed between at least two of each supporting surfaces so that asubstantial part of the weight of the member is supported by the firstsuspension. The object may also be obtained by the suspension itselfbefore installation in the wind turbine.

[0015] The object may also be achieved by a wind turbine having a secondsuspension characterised in that the wind turbine further comprising atleast a first suspension being suspended by the nacelle, the first cablesuspension defining substantially vertically extending supportingsurfaces, the outer surface of each of said elongated members such aselectrical power cables for a longitudinal length of between one and twotimes the mean outer diameter of the member and that the verticallyextending supporting surfaces are provided with beads, and the memberbeing in abutting contact with and squeezed between at least two of eachsupporting surfaces so that a substantial part of the weight of themember is supported by the first cable suspension. The object may alsobe obtained by the suspension itself before installation in the windturbine.

[0016] By the present invention a means is provided for suspendingelongated members such as electrical power cables, hydraulic hoses,ropes and the like which eliminates the risk of as example cablesdetaching from the nacelle causing failure in delivering the electricalpower from the generator system of the wind turbine to the user. This isespecially a risk in tall wind turbines that are becoming more and morecommon because of an increasing demand for wind turbines with larger andlarger electrical capacity. Also, when using wind turbines with highertowers there is the risk of the electrical cables twisting inside thetower when the nacelle is pivoted in relation to the tower. In thefollowing reference will mainly be made to electrical power cables as anexample of elongated members to be suspended. However, the reference toelectrical power cables does not limit the type of elongated membersthat the invention may be used for.

[0017] By letting the clamping portions extend around each other and byletting the clamping portions being assembled linearly and by lettingthe inner surface of the clamping portions extend in continuation of theinner surface of the jaws on the first clamping portion, it is achievedthat no pincers-movement will occur when the clamping portions areassembled around e.g. the cable. Moreover it is achieved that it ispossible to leave a large part of the inner surface of the clampingportions free so that the clamping around the cable can take placeindependently of the mutual engagement between the clamping portions.

[0018] In a preferred embodiment of invention the suspension is shapedin such a manner that the inner surface of the first clamping portionhas a substantially semicircular contour, that the inner surface of thesecond clamping surface has a substantially semicircular contour, andthat in a first application situation the clamping portions are securedso that the inner surfaces of the two clamping portions form athrough-going hole which is circular when the clamping portions areassembled, and in a second application situation are secured so that theinner contour of the inner surfaces of the two clamping surfaces form athrough-going hole which is oval when the clamping portions areassembled.

[0019] By providing through-going holes between the jaws on the clampingportions, being either round or oval, with said clamping portions it ismade possible to secure e.g. cables with different diameters. In apreferred embodiment the suspension is characterised in that thesuspension comprises a first clamping portion and furthermore comprisesa first embodiment of a second clamping portion and a second embodimentof the second clamping portion, and that both the first embodiment andthe second embodiment of the second clamping portion each are capable ofco-operating with the first clamping portion, and where thethrough-going hole is substantially round when the first clampingportion cooperates with the first embodiment of the second clampingportion, and the through-going hole is substantially oval when the firstclamping portion cooperates with the second embodiment of the secondclamping portion.

[0020] By using the said first clamping portion but various secondclamping portions, it is possible to obtain same large variation indiameter of e.g. those cables which the suspension is capable ofsecuring. It is an advantage that only a single embodiment of the firstclamping portion is capable of co-operation with various embodiments ofthe second clamping portion as it is then possible to retain the firstclamping portion attached to e.g. a holder, and at the same time it ispossible to replace the second clamping portion in order to secure e.g.different cables with different diameters.

[0021] The clamping portions according to the present invention arepreferentially manufactured and are preferentially used as separateclamping portions. In an alternative embodiment, by the manufacture andthe use of the clamping portions it will however be possible to join thefirst clamping portion with the second clamping portion by means of akind of hinge device. This may have the advantage that already at themanufacture it is made easier to figure out, in connection with thelater use, which clamping portions belong together, and that the firstclamping portion and the second clamping portion are already joinedtogether when the cable are mounted between the clamping portions, andthe ears of the clamping portions are subsequently squeezed together bymeans of the bolts which extend through the holes in the ears.

[0022] Moreover, it will be possible to join a plurality of first and aplurality of second clamping portions so that a row of first clampingportions and a row of second corresponding clamping portions are formed.This opens up the possibility of delivering the clamping portions intapes comprising several clamping portions of the same type. The type ofclamping portion, which is suitable, can then be broken off or cut offthe tape with the clamping portion of the type in question. It will alsobe possible to provide a combination of connections between a firstclamping portion and a second clamping portion and connections in a tapepartly between a plurality of first clamping portions and partly betweena plurality of second corresponding clamping portions.

[0023] In a preferred embodiment a plurality of cable spacing devicesare arranged between the electrical power cables with a vertical spacingbetween neighbouring spacing devices, each spacing device being arrangedso as to maintain the power cables in a constant position in ahorizontal plane of the spacing device with a mutual spacing between thecables.

[0024] By using spacing devices it is intended to keep a distancebetween the cables. Because of the electrical current running throughthe cables the cables are slightly heated. However if perhaps six cablesare hanging from the nacelle and down through the tower, the heatingwill take place of all six cables at the same time. In this case it isespecially necessary to maintain a distance between the cables. It isalso necessary to maintain a distance between the cables in order toeliminate the risk of wear of the insulation of the cables. If thecables are passed down through the tower in a bundle the cables willslide along each other when the nacelle is pivoting in relation to thetower. Using spacers ensures that this mutual sliding is avoided.

[0025] In a further preferred embodiment the plurality of electricalpower cables forms a down-hanging curve and is secured to the stationarypart of the wind turbine at a vertical position above the lowest part ofthe curve, the vertical extent of the loop at the reference position ofthe nacelle being of a magnitude sufficient to ensure that the cablewill not be exposed to excessive longitudinal tension due to therelative shortening of the cable caused by twisting of the cable duringpivoting of the nacelle.

[0026] By securing the cables to the stationary part as example by usinga cable support device that is secured to the inner wall of the tower,the cables will be led down through most of the tower along the innerwall of the tower. This makes it possible to eliminate the risk of thecables twisting excessively because the cables are hanging freely in adownwards curve before being led past the suspension, said downwardscurve taking up the tensioning of the cable when the nacelle is pivotingin relation to the tower. Also, it eliminates the inconvenience ofhaving the cables to take up space in the center of the tower.

[0027] Further scope of the applicability of the present invention willbecome apparent from the detailed description given hereinafter.However, it should be understood that the detailed description andspecific examples, while indicating preferred embodiments of theinvention, are given by way of illustration only, since various changesand modifications within the spirit and scope of the invention willbecome apparent to those skilled in the art from this detaileddescription.

BRIEF DESCRIPTION OF DRAWINGS

[0028] The invention will now be described with reference to theaccompanying drawings, which are given by way of illustration only, andthus are not limitative of the present invention, and wherein:

[0029]FIG. 1 is a sectional view of a wind turbine tower with a part ofa nacelle shown above the top of the tower and with a cable suspensionaccording to the invention,

[0030]FIG. 2 is a second sectional view of a wind turbine tower with acable suspension according to the invention and with a fastening deviceaccording to the invention

[0031]FIG. 3 is a longitudinal view of a cable suspension according tothe invention,

[0032]FIG. 3A is a longitudinal view of an alternative cable suspensionaccording to the invention

[0033]FIG. 4 is a sectional view of a supporting surface of the cablesupport

[0034]FIG. 5 is a plane view of the supporting surface of the cablesupport

[0035]FIG. 6 is a sideways view of a fastening device according to theinvention

[0036]FIG. 7 is a top view of the fastening device according to theinvention

[0037]FIG. 8 is a plane view of a cable distance device according to theinvention,

[0038]FIG. 9 is a view from beneath of an embodiment of a first clampingportion,

[0039]FIG. 10 is a sectional side view through the first clampingportion,

[0040]FIG. 11 is a crosswise sectional view through the first clampingportion,

[0041]FIG. 12 is a perspective view as seen diagonally from beneath ofthe first clamping portion,

[0042]FIG. 13 is a view from beneath of an embodiment of a secondclamping portion,

[0043]FIG. 14 is a side view through the second clamping portion,

[0044]FIG. 15 is crosswise view through the second clamping portion,

[0045]FIG. 16 is a perspective view as seen diagonally from beneath ofthe second clamping portion,

[0046]FIG. 17 is a perspective view of engagement between the firstclamping portion and a first embodiment of the second clamping portionin a first application situation,

[0047]FIG. 18 is a perspective view of engagement between the firstclamping portion and a second embodiment of the second clamping portionin a second application situation,

[0048]FIG. 19 is a perspective view of engagement between a secondembodiment of the first clamping portion and a third embodiment of thesecond clamping portion,

[0049]FIG. 20 is a perspective view of a first type of holder with aplurality of suspensions according to the invention mounted on aplurality of polygonal plates

[0050]FIG. 21 is a photograph of a second type of holder with aplurality of suspensions according to the invention mounted on apolygonal plates,

[0051]FIG. 22 is a sketch of a third type of holder for ensuring themaintenance of the cables in a horizontal direction,

[0052]FIG. 23 is a photograph of a fourth type of holder also forensuring the maintenance of the cables in a horizontal direction, and

[0053]FIG. 24 and FIG. 25 are a drawings showing a way that suspensionsmay be temporarily secured to intermediate floors in the wind turbinetower.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0054]FIG. 1 shows a stationary structure of a wind turbine. Thestationary structure comprises a tower 1. A nacelle 2 is placed on topof the tower 1. The nacelle 2 is pivotable around a vertical axis Malong the center of the tower 1. A ladder 3 is mounted to the nacelle 2and extends down into the tower 1 past a passage 4 between the nacelle 2and the tower 1. A cable suspension 5 is fastened to the ladder 3 andaccordingly also fastened to the nacelle 2. The cable suspension has alength L being at least four times the diameter of a cable (see FIG. 3).The cable suspension 5 is fastened to the ladder 3 by means of a linkage6 being able to swing freely in just one vertical plane perpendicular tothe plane of the paper. A wire 7 or a rope extends from the cablesuspension 5 further down through the tower 1. The wire 7 or rope isprovided with cable spacing devices 8 that are distributed evenly downthe wire 7 or rope. The cable spacing devices 8 are intended formaintaining a distance between cables extending from the cablesuspension 5 down through the tower 1. A total of four cable spacingdevices 8 are distributed with equal distance between the number ofdevices. A depiction of a cable spacing device seen parallel with thelongitudinal axis M is shown in FIG. 8. For the sake of clarity nocables are shown in FIG. 1.

[0055]FIG. 2 shows the stationary structure of a wind turbine. Thestationary structure also comprises the tower 1. A single cable 9 isshown extending form the cable support that is fastened to the ladder 3.The cable 9 extends down through the tower 1. Partly down the tower thecable is supported by a fastening device 10 (see FIG. 6 and FIG. 7). Thefastening device 10 is secured to the inner wall of the tower 1. Thecable 9 shows a downward curve 11 along which the cable is hangingfreely and an upward curve 12 along which the cable 9 is supported bythe fastening device 10. The fastening device 10 has a supporting curvedplate (see FIG. 6 and FIG. 7) on which the cable 9 is lying. Afterhaving passed the curved plate the cable 9 is fastened to the fasteningdevice 10 by means of fastening plates (see FIG. 6 and FIG. 7). Byproviding a downwards curve 11 along which the cable 9 is hanging freelyit is prevented that a tensioning of the cable 9 when the nacelle 2 ispivoting in relation to the tower 1 will cause the cable to beexcessively tensioned and torn apart.

[0056]FIG. 3 shows a cable suspension 5 according to the invention. Thecable suspension 5 is shown parallel with a longitudinal axis of thecable suspension, said longitudinal axis extending perpendicular to theplane of the paper and being vertical, when the cable suspension 5 isplaced in the tower 1. The cable suspension 5 comprises an innersupporting rod 13 with a certain special outer curvature 14 and outersupporting plates 15 also with a certain special outer curvature 16. Theinner supporting rod 13 and the outer supporting surfaces 15 aremutually connected by a bolt 17 being secured to the inner rod 13 andextending through holes (see FIG. 4 and FIG. 5) in the supporting plates15. The supporting surfaces 15 may be moved along the bolt 17 in adirection along the bolt, and the supporting plates 15 is maintained inplace in relation to the bolt by nuts 18 having a cross section beingbigger than the hole (see FIG. 4 and FIG. 5) in the supporting plates15. Cables 9 are placed between the inner rod 13 and the outer surfaces15. Due to the certain special outer curvatures 14, 16 of the rod 13 andthe supporting plates 15 the inner rod 13 is pressed against theinsulation of the cable 9. A frictional layer 19 on the supportingplates 15 is abutting the insulation of the cable 9 opposite where thecurvature 14 of the inner rod 13 is pressed against the insulation ofthe cable 9. Thereby the cable is fastened to the cable suspension 5without the risk of sliding in a direction perpendicular to the plane ofthe paper along the inner rod 13 and along the outer supporting plates15.

[0057] In the embodiment shown of the cable suspension 5, the cablesuspension is supporting six cables 9 with a large diameter d1 usingthree curvatures 14 on the inner rod 13 and using three outer supportingplates 15. The cable suspension 5 is also supporting two cables 9 havinga medium diameter d2 and four cables having a small diameter d3 usingthe rear side of the before-mentioned outer supporting plates and thespecial curvature 16 of further outer supporting plates 15 that aremaintained in place in relation to the bolts outwardly in relation thebefore-mentioned supporting plates 15. The number of cables 9 and thediameter d1,d2,d3 of the cables 9 supported by the cable suspension 9are optional. It is also possible to exclude the use of the furtherouter supporting plates 15 if the number of cables 9 being supported bythe cable suspension 5 may be supported by the supporting plates 15 onlythat are keeping the largest cables in place.

[0058]FIG. 3A shows an alternative embodiment of a cable suspension 5.The cable suspension 5 shown in FIG. 3A has many similarities to thecable suspension shown in FIG. 3. However, while the cable suspensionshown in FIG. 3 primarily has an inner rod made of plastic, and hassupporting plates coated with rubber or the like, then the cablesuspension shown in FIG. 3A is made of steel or other metal, both theinner rod and the supporting surfaces. Neither the inner rod 13 nor thesupporting plates 15 are coated with rubber or the like. The metal thatthe rod 13 and the plates 15 are made of may be coated with a corrosioninhibiting means such as a zinc coating, but the coating is forinhibiting corrosion and is not for increasing friction. Also, thedesign of the inner rod 13 and of the supporting plates 15 is simplerand is not provided with specially designed curvatures. The inner rod 13and the supporting plates are just made of plain metal platesindividually joined and bent in order to establish the design of the rod13 and the supporting plates 15 as shown. The cable suspension in FIG.3A also has bolts 17 and nuts 18 for keeping the supporting plates inplace in relation to the inner rod 13.

[0059]FIG. 4 and FIG. 5 are a sectional view and a plane view,respectively, showing the design of the outer supporting plate 15 (seeFIG. 3). The outer supporting plate 15 has a curvature 16 that isadapted to support the outer surface of a cable such as it is shown inFIG. 3. The supporting plate 15 has an interior plate 20 made of metalwith a central plane part 21 and outer bent parts 22. The inner plate 20has two holes 23 through which the bolts (see FIG. 3) can protrude. Theinner plate 20 also has several perforations 24 that limit the weight ofthe plate 20. A frictional layer 19 such as a plastic or rubber materialis moulded around the inner plate 20. The frictional layer 19 forms thecertain special curvature 16 of the supporting plate 15.

[0060] Optionally, the frictional layer may be omitted therebyconstituting plane metal plates such as those used in the suspensionshown in FIG. 3A. In order to maintain a satisfactory friction then theperforation will normally be omitted too in order to have en even andunbroken surface against which the outer surface of the cables issupported. However, if the cables are of a relatively small diameter, orif the cables that are to be suspended are not long, then a satisfactoryfriction may be obtained also if the perforations are present.

[0061] Nevertheless, it will be possible to combine the type of and thedesign of the inner rod shown in FIG. 3 with either the supportingplates shown in FIG. 5 and FIG. 5 as is the case of the suspension shownin FIG. 3 or with a type of and design of plates as mentioned above andas shown as part of the suspension shown in FIG. 3A. It will also bepossible to combine the inner rod shown in FIG. 3A with a type of plateas mentioned above as is the case of the suspension in FIG. 3A or with atype of plate as shown in FIG. 4 and FIG. 5.

[0062]FIG. 6 and FIG. 7 are a sideways view and a top view,respectively, of a fastening device 10 for fastening of cables 9 to thetower 1 (see FIG. 2). The fastening device 10 has side plates 25 andbetween the side plates an upward curved plate 26 is stretching. At theone side of the side plates 25, which in the figure is the right handside, tongues 27 with holes 28 are provided for securing by means ofbolts or the like the fastening device 20 to the inner wall of the tower1 as shown in FIG. 2. Also at the same one side of the fastening device10 two bars 29 are provided between the side plates 25. The cables thatare to be mounted are led past the bars 29 and afterwards over thecurved plate 26 so that the cables are maintained in place between thebars 29 and the plate 26.

[0063] At the other side, which in the figure is the left-hand side, thefastening device 10 is provided with fastening means 30 for securingcables to the fastening device. The fastening means 30 comprises a baseplate 31 and fastening plates 32 that are placed at a distance from thebase plate 31. The distance is established by means of bolts 33 alongwhich the fastening plates 32 can be displaced towards the base plate 31or away from the base plate 31. The cables are intended for beingfastened preferably in pairs between the base plate 31 and a fasteningplate 32. If the cables have a relatively small diameter, the fasteningplate 32 is displaced further towards the base plate 31 and a nut 34 istightened. Opposite, if the cables have a relatively large diameter, thenut 34 is loosened and the fastening plate 32 is displaced further awayfrom the base plate 31 whereafter the nut 34 is tightened when thecables are in place.

[0064]FIG. 8 is a plane view of a cable spacing device 8 (see FIG. 1)for maintaining a mutual distance between the cables hanging downthrough the tower. The cable spacing device is suspended down along awire 7 or a rope as shown in FIG. 1. The device 8 has a polygonal orcircular circumference and is provided with slots 35,36 that extend fromthe circumference 37 towards the center 38 of the device. The center 38of the device is provided with a hole 39 through which the wire 7 (seeFIG. 1) or rope onto which the device is suspended can run.

[0065] The device has a first type of slots 35 that extend from thecircumference 37 and only a smaller distance s1 towards the center 38.The first type of slots 35 have an opening 39 at the circumference 37and lead into a partly circular section 40 having a larger diameter Dadapted for holding cables with substantially such a diameter. Thedevice has a second type of slots 36 that extend from the circumference37 and a greater distance s2 towards the center 38. The second type ofslots 36 also have an opening 41 at the circumference 37 and lead into apartly circular section 42 having a smaller diameter d adapted forholding cables with substantially such a diameter. All of the slots35,35 are provided with beads 43,44 that form a sort of closing of theopening 39,41 into the slots 35,36. The device is made from a slightlyresilient material so that the distance between the beads 43,44 isenlarged and the opening 39,41 of the slots 35,36 is widened when thecables are to be introduced into the slots 35,36. Alternatively thespacing device 8 can be made of a material being less resilient such asmetal and the introduction of the cables into the slots 35,36 past thebeads 43,44 is obtained by squeezing the insulation of the cables pastthe beads 43,44.

[0066] FIGS. 9,10,11 and 12 show a first clamping portion 101 for asuspension according to the invention. The clamping portion 101comprises two jaws 102, which along a first stretch 1 run in asemicircle, and which along second stretches m run rectilinearly incontinuation of the semicircle. The semicircle has a diameter d. Thesecond stretches m may run parallel with each other and parallel with alongitudinal axis of the extent of the jaws. Alternatively, the secondstretches m may converge a little towards each other towards an opening3 of the clamping portion. It is the jaws 102 that form the opening 103,and between the jaws 102 along the stretch m there is a inner width B.In the shown embodiment the inner width B is equal to the diameter d1 ofthe semicircle within the first stretch 1. However, alternatively theinner width is a little smaller, as example 1 mm smaller, than thediameter d of the semicircle. This has the advantage that whenintroducing the cables into the clamping portion through the opening,then the cables meet a small resistance when having to pass the opening.Having overcome this resistance the cables are kept in place by aresistance towards slipping out through the opening.

[0067] A tongue 104 extends outwards from the jaws 102 in the oppositedirection of the opening 103 on the jaws 102 and parallel with thelongitudinal axis A of the extent of the jaws 102. The tongue 104 isintended for clamping the clamping portion 101 onto a holder (see FIG.20), and for that purpose the tongue 104 is provided with athrough-going hole 105 for the mounting of a bolt (not shown) or thelike clamping means through the hole 105.

[0068] In the embodiment shown (see FIG. 10) the hole is formed so as toaccommodate the head of a bolt that is passed through the hole. This isdone by dividing the hole in a lower part with a smaller diameter and anupper part with a larger diameter for accommodating the head of thebolt. Alternatively, the hole may in stead be shaped so as toaccommodate a nut for the bolt. This may be done by shaping the lowerpart with a larger diameter for accommodating the nut and the upper partwith a smaller diameter. In the latter case, the lower part may behexagonal so that the nut is accommodated with a snug fit in the lowerpart of the hole. Thereby, the hole itself will be able to restrict thenut from rotating when the bolt is turned during mounting of theclamping portion to the holder (see FIG. 20) and thus eliminating theneed for a wrench for the nut and only needing a wrench or a screwdriverfor the bolt.

[0069] On each side the tongue 104 has a larger thickness formingreinforcing ribs 106, and the tongue 104 also has a larger thickness ofmaterial around the hole in order to form a strengthening 107 of thehole.

[0070] On the rear side the jaws 102 have two projections 108, extendingoutwards from the jaws 102 in the opposite direction of the opening 103of the jaws 102. The projections 108 extend outwards on each side of thetongue 104, and are intended for forming abutment with a plate (see FIG.20) on a holder for mounting a plurality of clamping portions.

[0071] On each side of the jaws 102 the clamping portion 101 is providedwith ears 109, extending outwards in a plane p perpendicular to thelongitudinal axis A of the jaws 102. The ears 109 are intended for beingpositioned opposite corresponding ears on the other clamping portion(see FIGS. 13-20). The ears 109 are provided with through-going holes110 (see FIG. 11) for the mounting of a bolt (not shown) or the likefastening means through the hole 110. The bolt is intended for claspingtogether the ears 109 of the shown first clamping portion 101 and theears of the second clamping portion (see FIGS. 13-20) in order to clampthe jaws on each of the clamping portions towards each other.

[0072] On an inner side 111 the jaws 102 are provided with a bead 112,extending inwards between the jaws 102. The beads 112 are intended forbeing pressed into the plastic or rubber insulation of a cable (notshown) or a cord secured in the suspension 101. The beads 111 result ina substantially better securing of a cable or a cord, especially inthose cases where the cable or the cord hangs vertically in thesuspension 101.

[0073] FIGS. 13,14,15 and 16 show a second clamping portion 113 for asuspension according to the invention. The clamping portion 113 alsocomprises jaws 114, which run along a stretch n in a circle curvesmaller than a semicircle. The jaws form an opening 115, and between thejaws 114 there is an outer width b. The outer width b of the jaws issmaller than the inner width B of the jaws on the first clamping portion(see FIGS. 9-13). Along the stretch n the outer sides 116 of the jaws114 run conically with a conicity c turned towards the opening for thejaws 114. This means that the jaws 114 of the shown second clampingportion 113 are capable of stretching into the jaws 102 of the firstclamping portion 1 (see FIG. 9).

[0074] On each side of the jaws 114 the clamping portion 113 is providedwith ears 117, extending outwards in a plane q perpendicular to thelongitudinal axis A of the jaws 114. The ears 117 are intended for beingpositioned opposite corresponding ears 109 of the first clamping portion101 (see FIGS. 9-13). The ears 117 are provided with through-going holes118 for the mounting of a bolt (not shown) or the like fastening meansthrough the hole 118. The bolt is intended for clasping together theears 117 of the second clamping portion 113 and the ears 109 of thefirst clamping portion 101 (see FIGS. 9-13) in order to clamp the jawsof each of the clamping portions towards each other.

[0075] The jaws 114 are, like the jaws of the first clamping portion, onan inner side 119 provided with a bead 120 extending inwards between thejaws 114. The beads 120 result in a substantially better securing of acable or a cord, especially in those cases where the cable or the cordhangs vertically in the suspension. In the embodiments shown, seeespecially the cross-section in FIG. 15, there is a space S between theears 117. However, in a preferred embodiment this space S is beingprovided with flanges extending between the ears, in the plane of thepaper as seen in FIG. 15 and perpendicular to the plane of the paper asseen in FIG. 14, so as to mutually connect the ears. It has turned outthat when clasping the shown second clamping portion together with thefirst clamping portion (see FIGS. 9-12) and fastening the clampingportion together by means of a bolt (not shown) there is a risk of theears 117 being bent in relation to each other and in relation to thejaws 114. By providing a number of flanges along the length of thesecond clamping portion, then the ears are mutually fixed in relation toeach other and the ears are also fixed in relation to the jaws. Therebythe risk of the ears bending is avoided.

[0076] In alternative embodiments, it is rendered possible for both thefirst clamping portion and the second clamping portion to provide othermeans than beads, e.g. buttons formed in the jaws. The application ofsuch means and the shaping of these depend on the type of flexible item,such as cables, cords, wires, robes etc., which the suspension has tocarry, and whether the suspension has to carry the item vertically,horizontally or in any other direction between vertically orhorizontally. It is also possible to leave out any kind of means so thatthe jaws are quite plane on the inside.

[0077] The first clamping portion and the second clamping portion arepreferably made from polyamide, which is fibre-strengthened, preferablywith glass fibres. Polyamide has the advantage that it can absorb andemit moisture so that the securing of the cable is maintainedindependently of the air humidity in the surrounding atmosphere.

[0078]FIG. 17 shows a first clamping portion 101 and a first embodimentof the second clamping portion 113 in mutual engagement in a firstapplication situation for cables with small diameter. The cable intendedfor being secured in the suspension is however left out for the sake ofthe illustration. The jaws 114 of the second clamping portion 113 extendinwards into the jaws 102 of the first clamping portion 101. The secondclamping portion 13 has jaws extending along a given larger circle curvewith a diameter d2. Bolts 121 extend through the holes 110, 118 in theears 109, 117 of the first clamping portion 101 and the second clampingportion 113 respectively.

[0079] When, as in the shown application situation, the clampingportions are clamped towards each other by tightening the bolts, thethrough-going hole 122, which is formed between the jaws 102, 114 of thetwo clamping portions 101, 113, will have a substantially circular crosssection. If the cable, which is intended for extending through the hole122 formed between the jaws 102, 114, has a diameter slightly smallerthan the diameter d1 of the semicircle of the jaws 102 on the firstclamping jaw (see FIGS. 9-13), said cable will be secured alongpractically the whole radius of the cable. In a specific embodiment, thesuspension shown in FIG. 17 is capable of securing cables with adiameter of between 34 mm and 39 mm.

[0080]FIG. 18 shows a first clamping portion 101 and a second embodimentof the second clamping portion 113 in mutual engagement in a secondapplication situation for securing cables with larger diameter. Thecable intended for being secured in the suspension is however left outfor the sake of the illustration. The jaws of the second clampingportion 113 extend inwards into the jaws 102 of the first clampingportion 101. The second clamping portion 113 has jaws 114 extendingalong a given smaller circle curve d₃. Bolts 121 extend through theholes 110, 118 in the ears 109, 117 of the first clamping portion 101and the second clamping portion 113, respectively.

[0081] When, as in the shown application situation, the clampingportions 101,113 are clamped towards each other by the tightening thebolts 121, the through-going hole 123 formed between the jaws 102, 114of the two clamping portions 101, 113, will have a substantially ovalcross section with a semicircle in one end formed by the jaws 102 of thefirst clamping portion 113, and a smaller circle curve in the other endformed by the jaws 114 of the second clamping portion 113. If the cableintended for extending through the hole 123 formed between the jaws 102,114 has a diameter, which is practically equal to the diameter d of thejaws 102 of the first clamping portion 101, said cable will be securedalong practically the whole radius of the cable. In a specificembodiment, the suspension shown in FIG. 18 is capable of securingcables with a diameter of between 41 mm and 46 mm.

[0082]FIG. 19 shows a second embodiment of the first clamping portionand a third embodiment of the second clamping portion in anotherapplication situation which is comparable with the other applicationsituation described in FIG. 18. The difference between the clampingportions in FIG. 19 and the clamping portions in FIG. 18 is merely thatthe dimensions of the clamping portions in FIG. 19 are smaller than thedimensions of the clamping portions in FIG. 18. This means that theclamping portions in FIG. 19 are capable of securing cables having asmaller diameter than the cables that the suspension in FIG. 18 iscapable of securing. In a specific embodiment, the suspension shown inFIG. 19 is capable of securing cables with a diameter of between 21 mmand 24 mm.

[0083] It is shown in all the FIGS. 17-19 that the bolts extendingthrough the holes in the ears have a length so that the bolts justextend to the far side of the nut. Thereby the bolt will not pass thenut and accordingly the end of the nut will not take up any space whenthe clamping portions are clasped together. However, if at least one ofthe bolts have a length being substantially longer than the bolts shownthen the bolt in question may function as a hinge between the first andthe second clamping portion. If the bolt is longer then it will bepossible to assemble the bolt and the nut but still having theopportunity to pull the first and the second clamping portions form eachother for insertion of a cable into the jaws of the first clampingportion.

[0084] It is of great advantage to have the possibility to keep thefirst and the second clamping portion together before suspension ofcables. Thereby there is no risk of dropping the second clamping portionin an attempt to hold both the cable and the second clamping portion inplace while at the same time having to tighten the bolts. Suspension ofa cable in the clamping portions by use of a long bolt as hinge takesplace by firstly assembling one long bolt with the corresponding nut,then pulling the first clamping portion as far from the first clampingportions as the assembling of the long bolt and nut permit, theninserting the cable into the jaws of the first clamping portion, theninserting the jaws of the second clamping portion into the jaws of thefirst clamping portion, and finally assembling the other perhaps shorterbolt and nut and tightening both bolts and both nuts for clasping theclamping portions together around the cable.

[0085]FIG. 20 shows a first type of holder 124 for mounting a pluralityof suspensions according to the invention. The holder 124 consists of alongitudinal carrying beam 125 and plate sections 126 attached to thecarrying beam 125 at regular intervals. The suspensions are attached tothe plate sections 126 by means of bolts 127. Thus, the holder 124 formsa kind of carousel with suspensions according to the invention. Theplate sections 126 extend in planes P perpendicularly to thelongitudinal axis C of the carrying beam 125. The shown holder 124 isintended for securing cables hanging vertically. With a holder 124 it ismoreover secured that the cables are not in physical contact with eachother, and thus no heat can be transferred between the cables.

[0086] With the shown suspensions and the shown number of suspensions itis possible to secure five cables with a small diameter and five cableswith a large diameter. By providing three plate sections, which arearranged parallel to each other and with suspensions placed incontinuation of each other, it is possible to secure the cable at threedifferent places in continuation of each other in order to increase thesecuring and to ensure that the cables are secured even if one of thesuspensions should break.

[0087] By means of the projections on the rear side of the jaws on thefirst clamping portion (see FIGS. 17-20), it is achieved that thesuspensions cannot be considerably displaced sideways around an axis ofrotation O through the bolts which extend through the hole in the tongueand which secure the suspensions to the plate sections. In alternativeembodiments, it will be possible to apply a holder with more or fewerplate sections arranged parallel along the carrying iron and to mountfewer suspensions on each plate section.

[0088] For the shown holder with a plurality of first clamping portionsand second clamping portions mounted on and to the holder, the abovementioned alternative manufacture of clamping portions where a firstclamping portion and a corresponding second clamping portion aremutually joined at the manufacture by a kind of hinge connection, wouldbe a suitable embodiment of the clamping portions. Also the abovementioned embodiment where a number of first clamping portions and anumber of corresponding second clamping portions are mutually joined atthe manufacture would be suitable for a holder to which a plurality ofclamping portions have been attached. The hinge connection can havedifferent shapes, depending on the necessary strength and the requiredphysical size of the hinge connection.

[0089] The invention is described above with reference to specificembodiments of the first clamping portion and the second clampingportion. It will be possible to apply clamping portions with other meansthan opposite ears in order to keep the clamping portions clampedagainst each other. Moreover, it will be possible to secure the clampingportions in another way than by providing the first clamping portionwith a tongue. Finally, it will be possible to let the jaws in theclamping portions extend over a larger or smaller length in order toestablish a more or less firm securing of the cable between the jaws. Ifthe clamping portions e.g. are applied for the securing of a cablehanging horizontally, it will not be necessary to secure the cable asfirmly as when the cable is hanging vertically.

[0090]FIG. 21 is a photograph of a pair of second type of holder 50.This holder 50 is not intended for being suspended but is intended, asshown, for being fastened to a stationary part of the wind turbine, inthe embodiment shown fastened to the inner wall of the wind turbinetower 1 by means of braces 51. However, a plate 52 similar to the plate126 for the first type of holder 124 shown in FIG. 20 is also a part ofthe second type of holder. Thus, the mounting of the suspensions withthe clamping portions (see FIGS. 17.19) to the plate 51 of the holdertakes place the same way as is described for the first type of holder.

[0091] As shown, the second type of holder 51 may have the plateorientated in different angular directions in relation to the fasteningmeans that are secured to the inner wall of the wind turbine tower. Thelower one of the holders has the plate orientated horizontally. Theupper one of the holders has the plate orientated obliquely, perhaps inan angel V of 45° in relation to horizontal or vertical. However, otherangels obliquely to horizontal or vertical may be used in stead. As canbe seen from the figure, it is possible to bend the cables in acontrolled manner by selecting a proper angel that the plate of theupper holder is orientated obliquely and by selecting a proper distancebetween the lower holder and the upper holder.

[0092]FIG. 22 is a sketch of a third type of holder 53 for holding thecables in a horizontal direction. The holder has an annular member 54that is intended for stretching round the cables in places in betweenthe suspensions described above. The third type of holder 53 also hastwo legs 55 that are to be secured to the inner wall of the wind turbinetower or secured to a latter stretching upwards through the wind turbinetower. In high winds, then the wind turbine tower will show dynamicoscillations with a certain given natural vibration. When the windturbine tower is showing natural vibration, then the cables stretchingfrom the nacelle and down through the tower will also start showingdynamic oscillations.

[0093] However, the natural vibration of the cables is different thanthe natural vibration of the tower. Therefore the cables will startswinging some distance from side to side within the tower and with acertain amplitude. In order to ensure that the swinging from side toside of the cables is not exaggerated to an extend that is notdesirable, then the third type of holder may be used. The third type ofholder 53 will maintain the swinging of the cables within the annularmember 54 of the holder. If the diameter of the annular holder is thesame as that of the bundle of cables when these are suspended from thesuspensions, then swinging of the cables can be completely avoided.

[0094]FIG. 23 is a photograph of a fourth type of holder. The holderconsists of a rod 56 that is placed between a stationary part of thewind turbine and a first type of holder 124 that is suspended from thenacelle. The rod may as example be secured between the inner wall of thetower or items secured to the inner wall and a first type of holderbeing the lowest of the first type of holders that is suspended from thenacelle. The rod is rigid but is joined to the stationary part and thesuspended first type of holder in a way so that the rod may swingupwards and downwards but is restricted from swinging sideways apartform swinging in the plane of the rod. The rod is also restricted fromrotating. Preferably, as shown in the cut-out, the joining of the rod ismade by way of a simple linkage with a hole 57 extending trough ends 58of the rod 56, the ends being supported in a U-shaped brace 59 havingholes 60 extending through the branches of the U, and a bolt 61 or splitextending through the holes 60 in the branches of the brace 59 andthrough the hole 57 in the ends 58 of the rod 56.

[0095] The fourth holder ensures firstly that the lowest one of thesuspended first holders does not have the possibility to start swingingbecause of the natural vibrations as mentioned above. Secondly thefourth holder ensures that the lower one of the suspended first holdersdoes not have the possibility to rotate, when the nacelle rotates. Thisis an object in order to ensure that the part of the cables extendingfrom the lower one of the first holders and to the stationary part ofthe wind turbine, which in the embodiment shown is a second type ofholder (see FIG. 21) do not rotate. The rotation of the cables beingsuspended between the nacelle and the lower one of the first type ofholder will be the only part of the cables that is being rotated.Because the rotation of this part of the cables takes place over arather long distance, then the overall twisting of the cables islimited. If however the twisting of the cables took place only along thelimited part extending between the lower one of the first type of holderand the stationary part, then the twisting of the cables would beexcessive. This risk is eliminated by using the fourth type of holder,which is also evident from the figure.

[0096] It is however important that the lower one of the first type ofholders can be raised and lowered in relation to the stationary part,because when the cables being suspended are twisted during the rotationof the nacelle, then the distance between the nacelle and the lower oneof the first type of holders will decrease, and the lower holder willraise. Because of the linkage between the lower holder and thestationary part is made by a rigid rod then, when the lower holder israised the lower holder will also be pulled a little towards the side ofthe stationary structure onto which the fourth type of holder issecured. The distance that the lower suspended holder is pulled sidewaysis, however, very limited depending on the distance that the lowersuspended holder is raised.

[0097]FIG. 24 shows a suspension that is secured to an intermediatefloor in the wind turbine tower. Intermediate floors are provided in thetower and at least a floor is provided just below the nacelle. Thesuspension is by means of the bolts extending form the inner rod andoutwardly secured to a triangular brace. The triangular brace is securedto the floor or to other fixed parts of the stationary part of the windturbine, in this case the wind turbine tower. By securing one or more ofthe suspensions to intermediate floors or other fixed parts of thestationary part then it will be possible to install the cables beforetransporting the wind turbine to the location of erection without therisk of the cables being detached or in any other way being damagedduring transportation. In the figure a brace is used because thesuspension extends through a hole in the floor and the brace maintainsthe suspension in the center of the hole which is also the position ofthe suspension when the wind turbine is erected. However, other meansthan a brace may be used for maintaining the suspension in place inrelation to the floor or other fixed part of the stationary part of thewind turbine.

[0098] When the cables are supported in the suspension and thesuspension is temporarily secured to a fixed part of the stationary partthen it is possible to install all cables before erecting the windturbine. This makes it a lot easier to install the cables because thecables are rather heavy. If the cables are to be installed after thewind turbine has been erected, then it is necessary to first lift oneend of the cables all the way from the bottom of the wind turbine to thenacelle, to attach the end of the cables at the appropriate place, andthen afterwards suspending the suspensions and thereafter the cables tothe suspensions. Especially the last step of suspending the cables inthe suspensions is very difficult because the suspension must take placein the center of the tower, the center being difficult to reach.

[0099] It will be possible voluntarily to use the holders describedsolely or in combination. Each of the holders server their own purposein suspending the cables form the nacelle to the bottom of the tower,and the more of the four holders that are used the more controlled willthe suspension of the cables be. However, due to the rather limitedspace within the wind turbine tower it is also of interest to limit thenumbers of holders used. In the above the invention is mostly describedwith reference to suspension of cables. However, it will be possible tosuspend other like items, such as hoses, as example hydraulic hoses, orropes etc.

[0100] The invention being thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the invention, and all suchmodifications as would be obvious to one skilled in the art are intendedto be included within the scope of the following claims.

1. A wind turbine comprising a stationary part including a tower (1)extending substantially vertically, a nacelle (2) comprising a windrotor having at least one blade arranged on a main shaft having asubstantially horizontal rotation axis and a power transmission system,a yawing system comprising a stationary part being fixed to an upper endof the tower (1) and a movable part being fixed to the nacelle (2), thestationary part and the movable part being designed so that the nacelle(2) is being supported vertically and horizontally by the tower (1) andmay pivot relatively to the tower about a substantially vertical yawingaxis (A), and a plurality of elongated members such as bendableelectrical power cables (9) for transferring electrical power from thegenerator system, the plurality of elongated members such as the powercables (9) being fastened at an upper end to the nacelle (2) and at alower end to the stationary part of the wind turbine, and a passage (4)being defined between the nacelle (2) and the tower (1) and beingpositioned so that the vertical yawing axis (A) passes through thepassage (4), the plurality of elongated members such as the electricalpower cables (9) passing through the passage (4), said wind turbinefurther comprising at least a first suspension (5) being suspended bythe nacelle (2), the first suspension defining substantially verticallyextending supporting surfaces(15), the outer surface of each of saidelongated members such as electrical power cables (9) for a longitudinallength of between one and two times the mean outer diameter (d1, d2) ofthe member being in abutting contact with and squeezed between at leasttwo of each supporting surfaces (15) so that a substantial part of theweight of the member is supported by the first suspension (5), and wherethe vertically extending supporting surfaces are provided with beads(112, 120), and, where the wind turbine comprises drive means fordriving the pivoting of the nacelle (2) relatively to the tower (1) andcontrol means for controlling said drive means so that the nacelle (2)will pivot less than a predetermined number of turns relatively to apredetermined reference position of the nacelle (2) so as to preventexcessive twisting of the power cables (9), and where each of theplurality of elongated members such as the electrical power cables (9)forms a down-hanging curve (11) and is secured to the stationary part ofthe wind turbine at a vertical position above the lowest part of thecurve, the vertical extension of the down-hanging curve at the referenceposition of the nacelle being of a magnitude sufficient to ensure thatthe member will not be exposed to excessive longitudinal tension due tothe relative shortening of the member caused by twisting of the memberduring pivoting of the nacelle (2).
 2. The wind turbine according toclaim 1, wherein a plurality of spacing devices (37) are arrangedbetween the elongated members such as the electrical power cables (9)with a vertical spacing between neighbouring spacing devices (5), eachspacing device being arranged so as to maintain the members such as thepower cables (9) in a constant position in a horizontal plane of thespacing device with a mutual spacing between the members.
 3. The windturbine according to claim 2, wherein the spacing devices (37) aresuspended from a vertically extending elongated, flexible supportingmeans (7) of which an upper end is suspended from the nacelle (2). 4.The wind turbine according to claim 3, wherein the supporting means (7)is secured to an upper end of the first suspension (5).
 5. The windturbine according to claim 1 and comprising a second suspension (101,113) being arranged at a lower vertical position than the firstsuspension (5), the second suspension defining substantially verticallyextending supporting surfaces (111, 119), the outer surface of each ofsaid members such as the electrical power cables (9) for a verticallength of at least four times the mean outer diameter of the memberbeing in abutting contact with and squeezed between at least two of eachsupporting surfaces (111,119) so that a substantial part of the weightof the member is supported by the second suspension.
 6. The wind turbineaccording to claim 5, wherein the second suspension (101, 113) is beingsuspended from the nacelle (2).
 7. The wind turbine according to claim5, wherein the second suspension (101, 113) is supported by a verticallyextending elongated, flexible supporting means (7) such as a wire, arope or a chain.
 8. The wind turbine according to claim 7, wherein thesupporting means (7) is fastened at an upper end to the first suspension(5).
 9. The suspension to be used in a wind turbine according to claim5, wherein the supporting surfaces (111,119) of the second suspension(101, 113) are formed from a resilient material.
 10. The suspensionaccording to claim 9, wherein said resilient material is plastic. 11.The wind turbine according to claim 1, further comprising a fasteningdevice (10) for fastening the members such as the power cables (9) tothe stationary part of the wind turbine, the fastening device (19)defining substantially vertically extending supporting surfaces (25),the outer surface of each of said members such as the power cables (9)being for a vertical length of at least four times the mean outerdiameter of the member in abutting contact with and squeezed between atleast two of each supporting surfaces (26, 29) so that a substantialpart of the weight of the loop of the member is supported by thefastening device (10).
 12. A suspension for attaching elongated members(9) such as cables, cords, wires or the like, said suspension comprisinga first clamping portion (101) having first clamping jaws (102) and asecond clamping portion (113) having second clamping jaws (114), saidclamping jaws (102, 114) being intended for clamping around one of themembers, and where the first clamping portion (101) and the secondclamping portion (113) may be displaced inwardly towards each other andby securing means (121) may be secured around the member, the secondclamping jaws (114) extend inwards into the first clamping jaws (102),that the first clamping jaws (102) extend around the second clampingjaws (114) when the two clamping portions (191,113) are assembled, thatan inner surface (119) of the second clamping jaws (114) extends inextension of an inner surface (111) of the first clamping jaws (102),that an outer width (b) of the second clamping jaws (114) is smallerthan an inner width (B) of the first clamping jaws (102), and that thefirst clamping portion (101) and the second clamping portion (113) areintended for being displaced linearly towards each other.
 13. Thesuspension according to claim 12, wherein the inner surface (111) of thefirst clamping jaws (102) has a substantially semicircular shapedcontour, that the inner surface (119) of the second clamping jaws (114)has a substantially semicircular shaped contour and that the innersurfaces (111, 119) of the jaws (102, 114) on the two clamping portions(101, 113) form a through-going hole which is substantially circularwhen the clamping portions (101, 113) are assembled.
 14. The suspensionaccording to claim 12, characterised in that the inner surface (111) ofthe first clamping jaws (102) has a substantially semicircular shapedcontour, and that the inner contour of the inner surfaces (111, 119) ofthe jaws (102,114) on the two clamping portions (101, 113) form athrough-going hole which is substantially oval when the clampingportions (101,113) are assembled.
 15. The suspension according to claim12, wherein the extension of the first clamping jaws (102) is inwardlyconical along an extension outwardly towards an opening (103) of the jaw(102) and that the extension of the second clamping jaws (114) is linearalong an extension outwardly towards an opening (115) of the jaw (114).16. The suspension according to claim 12, wherein the suspension (101,113) comprises a first clamping portion (101) and furthermore comprisesa first embodiment of a second clamping portion (113) and a secondembodiment of a second clamping portion (113), and that both the firstembodiment and the second embodiment of the second clamping portion(113) each are capable of cooperating with the first clamping portion(101).
 17. The suspension according to claim 16, wherein thethrough-going hole is substantially round when the first clampingportion (101) co-operates with the first embodiment of the secondclamping portion (113) and that the through-going hole is substantiallyoval when the first clamping portion (101) co-operates with the secondembodiment of the second clamping portion (113).
 18. The suspensionaccording to claim 12, wherein the clamping portions (101, 113) areprovided with ears (109, 117) extending outwardly and sideways from theclamping jaws (102, 114) in a plain substantially perpendicular to theextension of the clamping jaws (101,114), that the ears (109) on thefirst clamping portion (101) is opposite the ears (117) on the secondclamping portion (113) when the clamping jaws (102, 114) are assembledand that the ears (109, 117) are provided with means (110, 118) forenabling mutual securing between the ears (109,117).
 19. The suspensionaccording to claim 12, wherein the inner surfaces (111, 119) of theclamping jaws (102, 114) are provided with beads (112, 120) and that thebeads (112, 120) extend outwardly from the inner surfaces (111, 119) ofthe jaws (102, 114) and inwardly in the through-going hole between thejaws (102, 114) when the clamping portions (191,113) are assembled. 20.The suspension according to claim 12, wherein the clamping portion (101)are provided with a tongue (104) extending outwardly and backwards fromthe jaws (102) on the clamping portion (101) in a plain substantiallyparallel to the extension of clamping jaws (102), and that the tongue(104) is provided with means (105) for securing of the clamping portion(101) to a holder (124) characterised in that the clamping portion (101)is provided with projections (108) extending outwardly and backwardsfrom the jaws (102) and that the projections (108) extend in a plainimmediately parallel to the tongue (104) and that the projections areintended for abutting an edge of the holder (124) when the clampingportion (101) is mounted to the holder (124).
 21. The suspensionaccording to claim 12, wherein a first clamping portion (101) and acorresponding second clamping portion (113) are mutually joined by ahinge connection and/or that partly a plurality of first clamping jaws(102) and partly a plurality of corresponding second clamping jaws (114)are mutually joined a hinge connection.
 22. The first holder (124) forholding of a plurality of elongated members (9) such as cables, cords,wires or the like, said holder comprising a plurality of suspensionsaccording to claim 20, wherein the holder (124) is provided with a plate(126) with means for co-operation with the tongue (104) on thesuspensions (101), that the jaws (102) on the suspensions (101) extendoutwardly from the plate (126) when the suspensions (101) are mounted tothe plate (126) so that the through-going holes between the clampingjaws (102, 114) extend substantially vertical and that the plate (126)is provided with means (125) for securing of the plate (126) to aconstruction so that the plate extends in a horizontal plane.
 23. Thesecond holder (50) for holding of a plurality of elongated members (9)such as cables, cords, wires or the like, said holder comprising aplurality of suspensions according to claim 20, wherein the holder isprovided with a plate (52) with means for co-operation with the tongue(104) on the suspensions (101), that the jaws (102) on the suspensions(101) extend outwardly from the plate (52) when the suspensions (101)are mounted to the plate (52) so that the through-going holes betweenthe clamping jaws (102, 114) extend substantially vertical and that theplate (52) is provided with means (51) for securing of the plate to aconstruction so that the plate extends in an oblique plane in relationto a horizontal plane.
 24. The fourth holder constituting a means forsecuring a first type of said holder (124) according to claim 20,further comprising another stationary construction separate from theholder (124), wherein said fourth holder comprises a rod with a firstend being attached to the plate (126) of the said first type of holder(124) and a second end being attached to the stationary construction,said first and second ends being attached by means of a linkage providedat the said first type of holder (124) and at the stationaryconstruction and by which the rod is limited in its movement in relationto the plate and in relation to the stationary construction in such away that the rod is movable in one vertical plane only.